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  <div class="headertitle"><div class="title">thermometer.cpp</div></div>
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<div class="contents">
<a href="../../d0/d3d/thermometer_8cpp.html">浏览该文件的文档.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="preprocessor">#include &lt;QPainter&gt;</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="preprocessor">#include &lt;QResizeEvent&gt;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="preprocessor">#include &quot;<a class="code" href="../../d9/db3/thermometer_8h.html">QT/thermometer.h</a>&quot;</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span> </div>
<div class="foldopen" id="foldopen00005" data-start="{" data-end="}">
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#a6b371555ae3deaa8f063b951bbc2d121">    5</a></span><a class="code hl_function" href="../../d4/dfe/classthermometer.html#a6b371555ae3deaa8f063b951bbc2d121">thermometer::thermometer</a>(QWidget *parent): QWidget{parent},</div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span>    __m_low(-20),</div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span>    __m_hight(80),</div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span>    __m_c(20.0),</div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span>    __m_en_c( true ),</div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span>    __m_en_f( true ),</div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span>    __m_en_title( false ),</div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span>    __m_title_alignment( Qt::AlignCenter),</div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span>    __m_line_color( QColor( 0, 0 ,0 ) ),</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span>    __m_meter_color( QColor( 128,128 , 128 ) ),</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span>    __m_hg_color( QColor( 200 , 0 , 0 )),</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span>    __m_back_color(QColor(255,255,255)),</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span>    __m_scale_font_color(QColor(180,0,0)),</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span>    __m_title_color( QColor( 128 , 0 , 128 ) ),</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span>    __m_title_font_size(2),</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span>    __m_scale_font_size(2),</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span>    __m_scale(5),</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span>    __m_scale_detail(10),</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span>    __m_title( <span class="stringliteral">&quot;温度&quot;</span> ){}</div>
</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#ab8a73213229f71102ca7343f8d40037b">   25</a></span>thermometer :: ~thermometer(){}</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="keywordtype">void</span> thermometer :: paintEvent( QPaintEvent *  )</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>{</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span>    QPainter p( <span class="keyword">this</span> );</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>    p.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing );</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span>    QSize s = size();</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span>    <span class="comment">// 调试边框内容</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span>    QPen pen1( __m_back_color );</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>    p.setPen( pen1 );</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>    QBrush b( __m_back_color );</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span>    p.setBrush( b );</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>    p.drawRect( 1, 1,s.width() - 2, s.height() - 2);</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>    <span class="comment">// 配置绘制基本参数</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>    p.setViewport( 1, 1 ,s.width() - 1, s.height() - 1 );</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>    p.setWindow( -50,-80 , 100, 100 );</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>    <span class="keywordflow">if</span>( __m_en_title == <span class="keyword">true</span> ){</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>        __draw_title( p );</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>    }</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>    __draw_hg_bar( p );</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>    __draw_bulb( p );</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>    __draw_hg( p );</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>    __draw_grid(p);</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>}</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="keywordtype">void</span> thermometer :: __draw_bulb( QPainter&amp; art )</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>{</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>    QPen pen(__m_hg_color );</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>    QBrush brush( __m_hg_color );</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>    art.setPen( pen );</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>    art.setBrush( brush );</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span> </div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>    art.drawEllipse( -6, -6 , 12 , 12 );</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>}</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="keywordtype">void</span> thermometer :: resizeEvent( QResizeEvent *event )</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>{</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>    QSize s = <span class="keyword">event</span>-&gt;size();</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>    <span class="keywordflow">if</span>( s.width() &lt; s.height() ){</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>        s.setWidth( s.height() );</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>    }<span class="keywordflow">else</span>{</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>        s.setHeight( s.width() );</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>    }</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>    resize(s);</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>}</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span> </div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="keywordtype">void</span> thermometer :: __draw_hg_bar( QPainter&amp; art )</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>{</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>    QRectF r(-3,-70,6,68);</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>    QPen pen( __m_line_color );</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>    pen.setWidthF( 0.2 );</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>    QBrush b( __m_meter_color );</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>    art.setPen( pen );</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>    art.setBrush( b );</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>    art.drawRect( r );</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>}</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="keywordtype">void</span> thermometer :: __draw_title( QPainter&amp; art )</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>{</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>    QFont f = __m_title_font;</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>    f.setPointSize( __m_title_font_size );</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>    art.setFont( f );</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>    QPen pen( __m_title_color );</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>    art.setPen( pen );</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>    <span class="keywordtype">float</span> x = -48, y = -76;</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>    <span class="keywordflow">if</span>( __m_title_alignment == Qt::AlignLeft ){</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>    }<span class="keywordflow">else</span> <span class="keywordflow">if</span>( __m_title_alignment == Qt::AlignCenter ){</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>        QFontMetricsF fm( f );</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>        <span class="comment">//auto w = fm.width( __m_title );</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>        <span class="keyword">auto</span> w = fm.maxWidth() * __m_title.length();</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>        x = (  -w ) / 2;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>    }<span class="keywordflow">else</span> <span class="keywordflow">if</span>(__m_title_alignment == Qt::AlignRight ){</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>        QFontMetricsF fm( f );</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>        <span class="comment">//auto w = fm.width( __m_title );</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>        <span class="keyword">auto</span> w = fm.maxWidth() * __m_title.length();</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>        x = 48 - w;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>    }<span class="keywordflow">else</span>{</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>        QFontMetricsF fm( f );</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>        <span class="comment">//auto w = fm.width( __m_title );</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span>        <span class="keyword">auto</span> w = fm.maxWidth() * __m_title.length();</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>        x = - w / 2;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>    }</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>    art.drawText( x ,y , __m_title );</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span>}</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="keywordtype">void</span> thermometer :: __draw_grid( QPainter&amp; art )</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>{</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>    <span class="keywordflow">if</span>( __m_en_c == <span class="keyword">false</span> || __m_en_f == <span class="keyword">false</span> ){ <span class="comment">// 如果了两个</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>        __draw_c_grid( art );</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>    }</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>    <span class="keywordflow">if</span>( __m_en_c ){</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>        __draw_c_grid( art );</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>    }</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span>    <span class="keywordflow">if</span>( __m_en_f == <span class="keyword">true</span> ){</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>        __draw_f_grid( art );</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span>    }</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>}</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="keywordtype">void</span> thermometer :: __draw_c_grid( QPainter&amp; art )</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>{</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>    <span class="keywordtype">float</span> x = 6.5 , y = -8;</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>    <span class="keywordtype">int</span> c  = __m_scale * __m_scale_detail;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>    <span class="comment">// 计算数据范围</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>    <span class="keywordtype">float</span> d_r = __m_hight - __m_low , d = __m_low;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>    <span class="comment">// 计算刻度范围</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>    <span class="keywordtype">float</span> step_coord = 55 / c, step_d = d_r / c;</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>    QPen pen , pen1;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>    pen.setColor( __m_line_color );</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>    pen.setWidth( 0.5 );</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>    pen1.setColor(__m_scale_font_color );</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span>    QFont f = __m_scale_font;</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span> </div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span>    f.setPointSizeF( __m_scale_font_size );</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span>    art.setFont( f );</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span>    art.setPen( pen );</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>    QString s;</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span> </div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>    <span class="comment">// 会长刻度</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>    <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i = 0; i &lt;= c; i ++ ){</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>        <span class="keywordflow">if</span> ( i % __m_scale_detail == 0 ){</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>            QLineF l( x , y , x + 4.0 , y);</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>            art.drawLine( l );</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>        }<span class="keywordflow">else</span>{</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>            QLineF l( x , y , x + 2, y);</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>            art.drawLine( l );</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>        }</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span> </div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>        y -= step_coord;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>        d += step_d;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>    }</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>    <span class="comment">// 绘制刻度文字</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>    art.setPen( pen1 );</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>    y = -8;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>    d = __m_low;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>    <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i = 0;  i &lt;= c; i ++ ){</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>        <span class="keywordflow">if</span> ( i % __m_scale_detail == 0 ){</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>            s = QString :: asprintf( <span class="stringliteral">&quot;%.02f&quot;</span> , d );</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>            art.drawText( QPointF( x + 7.4 , y + 1 ) , s );</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>        }</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>        y -= step_coord;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>        d += step_d;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>    }</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>    art.drawText( QPointF( x , y - 2 ) , <span class="stringliteral">&quot;℃&quot;</span> );</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>}</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span> </div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span><span class="keywordtype">void</span> thermometer :: __draw_f_grid( QPainter&amp; art )</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>{</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>    <span class="keywordtype">float</span> x = -6 , y = -8;</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>    <span class="keywordtype">int</span> c  = __m_scale * __m_scale_detail;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>    <span class="comment">// 计算数据范围</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>    <span class="keywordtype">float</span> f_heigh = __m_hight * 9 / 5 + 32, f_low = __m_low* 9 / 5 + 32;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>    <span class="keywordtype">float</span> d_r = f_heigh - f_low , d = f_low;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>    <span class="comment">// 计算刻度范围</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>    <span class="keywordtype">float</span> step_coord = 55/c , step_d = d_r / c;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>    QPen pen , pen1;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>    pen.setColor( __m_line_color );</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>    pen.setWidth( 0.5 );</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span>    pen1.setColor(__m_scale_font_color );</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>    QFont f = __m_scale_font;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span> </div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>    f.setPointSizeF( __m_scale_font_size );</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>    art.setFont( f );</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>    art.setPen( pen );</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>    QString s;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span> </div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>    <span class="comment">// 绘制刻度</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>    <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i = 0; i &lt;= c; i ++ ){</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>        <span class="keywordflow">if</span> ( i % __m_scale_detail == 0 ){</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>            QLineF l( x - 4.0, y , x , y);</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>            art.drawLine( l );</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>        }<span class="keywordflow">else</span>{</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>            QLineF l( x - 2 , y , x, y);</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>            art.drawLine( l );</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>        }</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span> </div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>        y -= step_coord;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>        d += step_d;</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>    }</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>    <span class="comment">// 绘制刻度文字</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>    art.setPen( pen1 );</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>    y = -8;</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>    d = __m_low;</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>    <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i = 0;  i &lt;= c; i ++ ){</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>        <span class="keywordflow">if</span> ( i % __m_scale_detail == 0 ){</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>            s = QString :: asprintf( <span class="stringliteral">&quot;%.02f&quot;</span> , d );</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>            QFontMetricsF fm( f );</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>            <span class="comment">//qreal w = fm.width(s);</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>            <span class="keyword">auto</span> w = fm.maxWidth() * __m_title.length();</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>            art.drawText( QPointF( x - 7.4 -w , y + 1 ) , s );</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>        }</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>        y -= step_coord;</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>        d += step_d;</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>    }</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span> </div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>     art.drawText( QPointF( x - 4, y - 2 ) , <span class="stringliteral">&quot;F&quot;</span> );</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>}</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span> </div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="keywordtype">void</span> thermometer :: __draw_hg( QPainter&amp; art )</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span>{</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>    <span class="comment">// 绘制从水银球到最低刻度之间的汞柱</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>    QPen pen( __m_hg_color );</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>    pen.setWidthF( 0.2 );</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>    QBrush b( __m_hg_color );</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>    art.setPen( pen );</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span>    art.setBrush( b );</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span>    QRectF r(-3 , -8 , 6 , 8);</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span>    art.drawRect( r );</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span>    qreal y = -8;</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span>    <span class="comment">// 计算数据范围</span></div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>    qreal d_r = __m_hight - __m_low ;</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span>    <span class="comment">// 计算刻度范围</span></div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span>    qreal step_coord = 1.1 , step_d = d_r / 50 , curr = y;</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span>    step_coord /= step_d;</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>    curr = -step_coord * ( __m_c - __m_low ) + y;</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span>    QRectF r1(-3 , curr , 6 , -curr);</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>    art.drawRect( r1 );</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span>}</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span> </div>
<div class="foldopen" id="foldopen00249" data-start="{" data-end="}">
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#a135eb60bdc4e4379d23d0e175856bc99">  249</a></span><span class="keywordtype">void</span> thermometer :: enableC( <span class="keywordtype">bool</span> en )</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>{</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span>    __m_en_c = en;</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>    repaint();</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>}</div>
</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span> </div>
<div class="foldopen" id="foldopen00255" data-start="{" data-end="}">
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#a78f1dccc3e79d598e20d02fc226205b5">  255</a></span><span class="keywordtype">void</span> thermometer :: enableF( <span class="keywordtype">bool</span> en )</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span>{</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>    __m_en_f = en;</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>    repaint();</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>}</div>
</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span> </div>
<div class="foldopen" id="foldopen00261" data-start="{" data-end="}">
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#ad01e966cda5b2a1dd682f71ed1950f0e">  261</a></span><span class="keywordtype">void</span> thermometer :: c( <span class="keywordtype">float</span> v )</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span>{</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>    __m_c = v;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>    repaint();</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>}</div>
</div>
<div class="foldopen" id="foldopen00266" data-start="{" data-end="}">
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#a9bc72f5769817804b2969f7e67380764">  266</a></span><span class="keywordtype">void</span> thermometer :: f( <span class="keywordtype">float</span> v )</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>{</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>    __m_c = ( v - 32 )/1.8;</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>    repaint();</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>}</div>
</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span> </div>
<div class="foldopen" id="foldopen00272" data-start="{" data-end="}">
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#a48a4d32fa4c442673ed2eb460aee5ffb">  272</a></span><span class="keywordtype">void</span> thermometer :: setTitleFont( <span class="keyword">const</span> QFont&amp; f , <span class="keyword">const</span> QColor&amp; c , <span class="keywordtype">long</span> s )</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>{</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span>    __m_title_font = f;</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>    __m_title_color = c;</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>    __m_title_font_size = s;</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>    repaint();</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>}</div>
</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span> </div>
<div class="foldopen" id="foldopen00280" data-start="{" data-end="}">
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"><a class="line" href="../../d4/dfe/classthermometer.html#a9f467d70748ac16d61ce29db43cf6958">  280</a></span><span class="keywordtype">void</span> thermometer :: setScaleFont( <span class="keyword">const</span> QFont&amp; f , <span class="keyword">const</span> QColor&amp; c , <span class="keywordtype">long</span> s )</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>{</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>    __m_scale_font = f;</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>    __m_scale_font_size = s;</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span>    __m_scale_font_color = c;</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>    repaint();</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>}</div>
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<div class="ttc" id="aclassthermometer_html_a6b371555ae3deaa8f063b951bbc2d121"><div class="ttname"><a href="../../d4/dfe/classthermometer.html#a6b371555ae3deaa8f063b951bbc2d121">thermometer::thermometer</a></div><div class="ttdeci">thermometer(QWidget *parent=nullptr)</div><div class="ttdef"><b>定义</b> <a href="#l00005">thermometer.cpp:5</a></div></div>
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